Spiromagic vs NIS Tracker
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Spiromagic
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Spiromagic is an innovative personal mobile app that helps you monitors your lungs. Spiromagic works seamlessly with our wireless spirometer that is small enough to put in your pocket. Spiromagic is for people who want to keep informed about the condition of their lungs, whether it be people with COPD, asthma or just people who want to utilize the latest in home fitness monitoring. Training and excercise can have a positive effect on your lungs, and now with Spiromagic the effects on the lung function can be measured and compared with historical data. Spiromagic records data over time and the user is able proactively respond to changes in their health conditions. Visit www.spiromagic.dk for more information about our products ββββ Features ββββ - Perform a full-blown spirometry tests at home - Input your personal profile and see how you compare to an healthy individual matching your age, height and sex. (80-120% is within normal) - View historical graphs for FEV1, PEF, FEV6, estimated lung age and expected lung function percentage. - View complete exhalation curves. - Upload & Share information to Health (HealthKit) ββββ Terminology ββββ - COPD: Chronic Obstructive Pulmonary Disease. - FEV1 = Forced Expiratory Volume in the first second. - FEV6 = Forced Expiratory Volume in six seconds. - PEF = Peak Expiratory Flow. NOTE: The Spiromagic spirometer is a Medical Device having CE Class IIa certification.
NIS Tracker
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NIS Tracker is the app for the Nordhavn Ice Swimmers; it travels with members through every dip, photo, and friendship. LOG YOUR SWIMS Open the app right out of the water and log a swim in a few taps β distance, water temperature, duration, conditions, and a photo or two. Every entry lands on the club feed for members to react to. SEE THE WHOLE CLUB Browse the feed for what others swam this morning. Tap a photo to read the story behind it. React with a fist bump, leave a comment, tag the swim buddies you went out with. EVENTS & GATHERINGS Coordinate morning dips, sauna sessions, and seasonal events. RSVP, see who else is going, get reminders. The Events tab keeps the club's schedule in one place. YOUR DATA, BEAUTIFULLY Personal stats by week, month, and season. Distance over time, temperature trends, your warmest and coldest swims. Club leaderboards you can opt out of anytime. ACHIEVEMENTS Earn milestones for first swims, distance landmarks, sub-zero water, season streaks, and more. PRIVATE BY DESIGN NIS Tracker is a closed-club app. New accounts wait for admin approval. No ads, no algorithmic feed, no growth tricks. Just the club, captured. Built by and for the cold-water community.
Screenshots
Verdict
The clearest difference is update cadence: NIS Tracker at every 2 days against Spiromagic's every 2 months. Spiromagic's advantage is device support (3 vs 1) and iOS requirement (10.3 vs 18.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Spiromagic ships an update every 2 months, NIS Tracker every 2 days. The most recent releases landed on June 6, 2026 and September 14, 2026 respectively.
| Parameter | Spiromagic | NIS Tracker |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 days β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 10.3 β better | 18.0 |
| Further details β not scored | ||
| Size | 168 MB | 24 MB |
| Age rating | 17+ | 4+ |
| Developer | SPIROMAGIC ApS | Andrew Valko |
In-app purchases
Spiromagic
No in-app purchases
NIS Tracker
No in-app purchases







